搜索结果: 1-15 共查到“理学 urban area”相关记录17条 . 查询时间(0.241 秒)
MULTILEVEL OBJECT BASED IMAGE CLASSIFICATION OVER URBAN AREA BASED HIERARCHICAL IMAGE SEGMENTATION AND INVARIANT MOMENTS
hierarchical segmentation shape object-based classification invariant moments
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2015/11/16
With the availability of very high resolution multispectral imagery from sensors such as IKONOS and Quickbird, it is possible to
identify small-scale features in urban environment. Because of the mu...
Refinement of a model for evaluating the population exposure in an urban area
population exposure urban area
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2014/12/19
A mathematical model is presented for the determination of human exposure to ambient air pollution in an
urban area; the model is a refined version of a previously developed mathematical model ...
Application of Statistical Methods to Assess Carbon Monoxide Pollution Variations within an Urban Area
Carbon Monoxide Monitoring Network Statistical Model Urban Air Pollution
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2013/3/11
In recent years there have been considerable new legislation and efforts by vehicle manufactures aimed at reducing pollutant emission to improve air quality in urban areas. Carbon monoxide is a major ...
Size Distribution of Airborne Particulate Matter and Associated Metallic Elements in an Urban Area of an Industrial City in Korea
Size distribution Metals Seasonal PM PCA Enrichment factor
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2016/3/28
This study analyzed the size distribution of airborne particulate matter (PM) and 13 metallic elements associated with it.
PM samples were collected using an eight-stage cascade impactor in a busy ur...
Monitoring subsidence effects in the urban area of Zonguldak Hardcoal Basin of Turkey by InSAR-GIS integration
Monitoring subsidence effects the urban area Zonguldak Hardcoal Basin of Turkey InSAR-GIS integration
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2010/10/21
Zonguldak Hardcoal Basin is the largest bituminous coal region in Turkey where extensive underground mining activity exists. Because of this activity subsidence effects have been experienced in differ...
An intensive study of aerosol optical properties in Beijing urban area
aerosol optical properties Beijing urban area
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2009/12/3
In order to quantify the aerosol impact on climate, a range of aerosol parameters are required. In this paper, two-year of ground-based observations of aerosol optical properties from an urban site in...
Annual particle flux observations over a heterogeneous urban area
Annual particle flux observations heterogeneous urban area
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2009/11/9
Long-term eddy covariance particle number flux measurements for the diameter range 6 nm to 5 μm were performed at the SMEAR III station over an urban area in Helsinki, Finland. The heterogeneity of th...
Inflation of Aira Caldera (Japan) detected over Kokubu urban area using SAR interferometry ERS data
Inflation Aira Caldera Kokubu urban area SAR interferometry ERS data
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2009/10/22
Nine ERS-1 and ERS-2 descending orbit data acquired over the Aira Caldera between June 1995 and November 1998 were used to create 31 differential interferograms. Although the interferograms exhibit a ...
A comparison study of regional atmospheric simulations with an elastic backscattering Lidar and sunphotometry in an urban area
regional atmospheric simulations elastic backscattering Lidar sunphotometry
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2009/9/23
We describe a comparison study of Aerosol Optical Thickness (AOT) from numerical simulations using a regional atmospheric model with an elastic backscattering lidar operating at 532 nm and a sunphotom...
Mass closure on the chemical species in size-segregated atmospheric aerosol collected in an urban area of the Po Valley, Italy
Mass closure size-segregated atmospheric aerosol Po Valley Italy
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2009/3/10
A complete size segregated chemical characterisation was carried out for aerosol samples collected in the urban area of Bologna over a period of one year, using five-stage low pressure Berner impactor...
Mass concentration and ion composition of coarse and fine particles in an urban area in Beirut: effect of calcium carbonate on the absorption of nitric and sulfuric acids and the depletion of chloride
Mass concentration effect of calcium carbonate absorption of nitric and sulfuric acids the depletion of chloride
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2009/1/8
Levels of coarse (PM10-2.5) and fine (PM2.5) particles were determined between February 2004 and January 2005 in the city of Beirut, Lebanon. While low PM mass concentrations were measured in the rai...
Analysis of Visible/SWIR surface reflectance ratios for aerosol retrievals from satellite in Mexico City urban area
Visible/SWIR aerosol retrievals Mexico City urban area
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2008/12/23
The surface reflectance ratio between the visible (VIS) and shortwave infrared (SWIR) radiation is an important quantity for the retrieval of the aerosol optical depth (τa) from the MODIS sensor data....
Size distributions of elemental carbon in the atmosphere of a coastal urban area in South China: characteristics, evolution processes, and implications for the mixing state
elemental carbon coastal urban area South China
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2008/11/21
Elemental carbon (EC), as one of the primary light-absorbing components in the atmosphere, has a significant impact on both regional and global climate. The environmental impacts of EC are strongly de...
Characterization of airborne individual particles collected in an urban area, a satellite city and a clean air site in Beijing, 2001.
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2007/7/28
期刊信息
篇名
Characterization of airborne individual particles collected in an urban area, a satellite city and a clean air site in Beijing, 2001.
语种
英文
撰写或编译
撰写
作者
Shi Zongbo,Shao Longyi,Jones,T. P.,Whitt...
Inflation of the Aira Caldera (Japan) detected over Kokubu urban area using SAR interferometry ERS data
Inflation Aira Caldera (Japan) detected Kokubu urban area SAR interferometry ERS data
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2010/9/28
Nine ERS-1 and ERS-2 descending orbit data acquired over Aira Caldera between June 1995 and November 1998 were used to create 36 differential interferograms. Although the interferograms exhibit a rela...